New generator logic and multi-select improvements

Version 1.43.0 is a return to the regular look following the Holiday Special edition. The extra set of puzzles is still included and can be played until the end of January. Also in this version:

• New logic has been built into the puzzle generator. This may be used when puzzles are generated at Expert skill level in Random Play. Puzzles that involve the new logic can be harder than ever!
• Some improvements to the way that operations are performed on a group of squares that have been selected together. This applies when the squares between two blocks are selected, either by tapping the sum value or by swiping, or when this selection is inverted by tapping the sum value again. More details below.
• More improvements to the help explanations.

The improvements to multi-select operations are as follows:

• If there is only one square left which doesn’t yet have a value, tapping a number button will set the number on that one square. Previously, the number was set as a candidate on the square, which meant the number did not get confirmed until the square was tapped separately.
• If candidate values are eliminated by tapping the numbers twice, the numbers that remain are automatically applied as the chosen combination once the right number of values are left. In other words, the values in the chosen combination are eliminated from the other squares in the same row or column, just as if these numbers had been tapped in individually.
• If the setting to “show if sums add up correctly” has been turned on, it is less likely that an intersecting row or column will show an incorrect sum momentarily while combination values are being applied to the selection.